Merchant, F. W. (Francis Walter), 1855-1937, Fessenden, Cortez, b. 1852 · Toronto : Copp, Clark · leaf 270
otated. The angle AOP which an incident ray makes withthe normal to the reflecting surface is called the angleof incidence, and the angle POB which the reflected raymakes with this normal is called the angle of reflection. Prepared by dipping paper in a saturated solution of potassic nitrate. 260… … Fig. 207. The movable arms are pivoted at the centre of the circle. The tubes are about 3 mm. in diameter and are blackened onthe outside. Whatever the position of the arms the tubesboth point always to the same point on the mirror, which issupported at the centre of the circle with its reflecting…
Physics
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